I hit my head a couple days ago, thinking nothing of it, took my ultram, put ice on it and, laid down. I am 8 months decompression and after laying down for about 2 hours, i woke up with the smell and kinda metallic taste.. have not been to dr, because i thought it was a bump, but niw i smell the metallic all the time, and now my walking is off and feeling like i am falling.. Wondering if i should go to the ER.